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Usowicz B., Łukowski M., Marczewski W., Usowicz J., Lipiec J., Rojek E., Słomińska E., Słomiński J.:  Soil moisture, dielectric permittivity and emissivity of soil: effective depth of emission measured by the L-band radiometer ELBARA. (2014 r.) European Geosciences Union General Assembly, (EGU), 2014, Wiedeń, Austria, 27.04 - 02.05.2014 r. 2014, Vol. 16, EGU2014-11507